Runner&#39;s starting block assembly



FIG. 1 is a rear perspective view of a runner's starting block assembly showing my design;

FIG. 2 is a front perspective view;

FIG. 3 is a top plan view;

FIG. 4 is a left side elevational view;

FIG. 5 is a right side elevational view;

FIG. 6 is a front elevational view;

FIG. 7 is a rear elevational view; and,

FIG. 8 is a bottom plan view. 

The ornamental design for a runner's starting block assembly, as shown. 